Looking for some advice, and possibly a diagram or two. I am considering installing 2 or 3 additional cigarette lighter sockets onto the top of my dashboard (using the socket holder from 4xrdirect) so that I have far less cables running from GPS, TPMS etc down to the standard cig socket.

I would run the cabling behind the dash. Would be advantageous if they operated exactly like the standard socket (off when vehicle is off).

I fitted 2 extra lighter sockets for the same reason, however I didn't fit them on the top of the dash but rather in the console (I had to cover the holes made for the old extra gauges anyway).

The wiring was easy - just looped off the existing lighter circuit. The extra sockets are used for GPS and cell charging, so no worries about overloading the circuit - left the original value fuse in place and it's never blown.

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I fitted 2 extra lighter sockets for the same reason, however I didn't fit them on the top of the dash but rather in the console (I had to cover the holes made for the old extra gauges anyway).

The wiring was easy - just looped off the existing lighter circuit. The extra sockets are used for GPS and cell charging, so no worries about overloading the circuit - left the original value fuse in place and it's never blown.

It would be simple enough to just tap off the existing circuit. I done that with usb points, but also added a seperate circuit that runs off a manual switch, this is so that I can leave stuff charging in van while vehicle is off and locked.